mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-30 23:30:07 +00:00
4926fd2c3e
- fix build compiling & linking to accomodate recent code churn in Ptex - fix FindPTex.cmake module to correctly extract version number - fix dxPtexViewer & glPtexViewer source to compile with new Ptex namespace changes - add alpha channel padding function to ptexMipmapLoader as a workaround to the absence of 3-channel DXGI formats - mirror ptex memory limit function from glPtexViewer to dxPtexViewer
71 lines
2.5 KiB
C++
71 lines
2.5 KiB
C++
//
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// Copyright 2013 Pixar
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//
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// Licensed under the Apache License, Version 2.0 (the "Apache License")
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// with the following modification; you may not use this file except in
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// compliance with the Apache License and the following modification to it:
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// Section 6. Trademarks. is deleted and replaced with:
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//
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// 6. Trademarks. This License does not grant permission to use the trade
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// names, trademarks, service marks, or product names of the Licensor
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// and its affiliates, except as required to comply with Section 4(c) of
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// the License and to reproduce the content of the NOTICE file.
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//
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// You may obtain a copy of the Apache License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the Apache License with the above modification is
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// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the Apache License for the specific
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// language governing permissions and limitations under the Apache License.
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//
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#ifndef OPENSUBDIV_EXAMPLES_GL_PTEX_MIPMAP_TEXTURE_H
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#define OPENSUBDIV_EXAMPLES_GL_PTEX_MIPMAP_TEXTURE_H
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#include <osd/nonCopyable.h>
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#include <osd/opengl.h>
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#include <Ptexture.h>
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#include <stdlib.h>
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class GLPtexMipmapTexture : OpenSubdiv::Osd::NonCopyable<GLPtexMipmapTexture> {
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public:
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static GLPtexMipmapTexture * Create(PtexTexture * reader,
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int maxLevels=-1,
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size_t targetMemory=0);
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/// Returns GLSL shader snippet to fetch ptex
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static const char *GetShaderSource();
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/// Returns the texture buffer containing the layout of the ptex faces
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/// in the texels texture array.
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GLuint GetLayoutTextureBuffer() const { return _layout; }
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/// Returns the texels texture array.
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GLuint GetTexelsTexture() const { return _texels; }
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/// Returns the amount of allocated memory (in byte)
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size_t GetMemoryUsage() const { return _memoryUsage; }
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~GLPtexMipmapTexture();
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private:
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GLPtexMipmapTexture();
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GLsizei _width, // widht / height / depth of the 3D texel buffer
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_height,
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_depth;
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GLint _format; // texel color format
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GLuint _layout, // per-face lookup table
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_texels; // texel data
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size_t _memoryUsage; // total amount of memory used (estimate)
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};
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#endif // OPENSUBDIV_EXAMPLES_GL_PTEX_MIPMAP_TEXTURE_H
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